Broan-NuTone 634 Broan Steel 3-1/4x 10" Roof Cap for 3-1/4 x 10 8-Inch Round Duct, 1 and Builder's Best 084635 Galvanized Steel Roof Vent Cap with Removable Screen & Damper, 4" Diameter Collar, Black

• Product 1: HIGH-QUALITY ROOF CAP: Roof cap for use with Range Hoods, LoSone Fans, and bath ventilation fans maximizes the air and sound performance of your fan or range hood Product 1: DURABLE: Constructed of sturdy, 24-gauge CRCQ steel construction with a black electrically-bonded epoxy finish to ensure durability and lasting use Product 1: RELIABLE: Includes a built-in, backdraft damper and bird screen provide a dependable roof cap you can rely on Product 1: SECURE: Footprint is 18.75" x 14.25" for a secure, well-balanced fit Product 2: Extremely Durable: This is a heavy duty 26 gauge galvanized roof vent hood with a high performance polyester powder coated finish. Product 2: Protection Against Corrosion: Our vent caps are ASTM B117 tested for anti-corrosive properties, showing very little or no signs of corrosion on our high performance polyester powder coated galvanized steel surface. Other leading and foreign brands have little or no corrosive protection. Product 2: Features: Riveted construction. does not use caulk. Includes pre-drilled holes for easy mounting. Vent also comes with a flapper (damper) that prevents back drafts. Product 2: Ideal for bathroom or kitchen vents. Screens are removable so that caps can be used for venting clothes dryers as well.